This paper provides a source coding theorem for multi-dimensional information signals when, at a ... more This paper provides a source coding theorem for multi-dimensional information signals when, at a given instant, the distribution associated with one arbitrary component of the signal to be compressed is not known and a side information is available at the destination. This new framework appears to be both of information-theoretical and game-theoretical interest: it provides a new type of constraints
This paper considers the problem of cooperative power control in distributed small cell wireless ... more This paper considers the problem of cooperative power control in distributed small cell wireless networks. We introduce a novel framework, based on repeated games, which models the interactions of the different transmit base stations in the downlink. By exploiting the specific structure of the game, we show that we can improve the system performance by selecting the Pareto optimal solution
In this work, we consider a distributed wireless network where many transmitters communicate with... more In this work, we consider a distributed wireless network where many transmitters communicate with a common receiver. Having the choice of their power control policy, transmitters are concerned with energy constraints: instantaneous energy-efficiency and long-term energy consumption. The individual optimization of the average energy-efficient utility over a finite horizon is studied by using control theory and a coupled system of
Transmitters of a multiple access channel are assumed to freely choose their power control strate... more Transmitters of a multiple access channel are assumed to freely choose their power control strategy in order to be energy-efficient. We show that in a stochastic game framework, we can develop energy-efficient distributed control strategies which only require partial knowledge of the entire system. Achievable utility equilibrium region is characterized and based on time-sharing, an explicit power control strategy is
Frequency non-selective time-selective multiple access channels in which transmitters can freely ... more Frequency non-selective time-selective multiple access channels in which transmitters can freely choose their power control policy are considered. The individual objective of the transmitters is to maximize their averaged energy-efficiency. For this purpose, a transmitter has to choose a power control policy that is, a sequence of power levels adapted to the channel variations. This problem can be formulated as
This paper addresses the problem of locating base stations in a certain area which is highly popu... more This paper addresses the problem of locating base stations in a certain area which is highly populated by mobile stations; each mobile station is assumed to select the closest base station. Base stations are modeled by players who choose their best location for maximizing their uplink throughput. The approach of this paper is to make some simplifying assumptions in order
2009 3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2009
We present a Bayesian game-theoretic approach for the distributed resource allocation problem in ... more We present a Bayesian game-theoretic approach for the distributed resource allocation problem in the context of K-user fading multiple access channels (MAC). We assume that users have incomplete information about the channel state information (CSI), i.e., each user knows his own channel state, but does not know the states of other users. All users (transmitters) are considered to be rational,
In this paper we consider some linear multi-antenna receivers to combat inter-operator interferen... more In this paper we consider some linear multi-antenna receivers to combat inter-operator interference in non-coordinated WCDMA networks. Adjacent channel interference creates dead zones where the QoS target cannot be reached. We first characterize the importance of this phenomenon by evaluating the dead zone area and the probability of finding a given number of users in it. We then derive a
2007 IEEE International Symposium on Information Theory, 2007
This paper studies high SNR approximations of the ergodic mutual information of block fading MIMO... more This paper studies high SNR approximations of the ergodic mutual information of block fading MIMO correlated Rician channels. The exact expression of the mutual information of such channels is quite complicated, and difficult to use to obtain convenient high SNR approximations. In this paper, it is replaced by an accurate large system approximant obtained in the case where the number of transmit and receive antennas t and r converge to +¿ at the same rate. The large system approximant is studied at high SNR, and it is shown that 3 different behaviours are possible depending on r/t, the rank of the line of sight component and the Rician factor. The accuracy of the high SNR approximant is shown to be connected to the support of the deterministic large system approximant of the eigenvalue distribution of the Gram matrix of the channel. This allows to infer that the approximant is accurate for realistic values of r and t if r ¿ t or if r = t, the line of sight component is invertible and the Rician factor is greater than a certain threshold.
2010 4th International Symposium on Communications, Control and Signal Processing (ISCCSP), 2010
... mixed strategy. The utility for player i E lC ifthe initial channel state is 1](1), is define... more ... mixed strategy. The utility for player i E lC ifthe initial channel state is 1](1), is defined by: Vi ... if Vi E x.V7I, Vi (i., !l(1)) 2: Vi (7I,i.:;!l(1)) (14) where -i is the standard notation to refer to the set lC\{i}; here i.-i = (71, ..., 7i-l, 7i+l, ...,7K). The notion ...
The purpose of this work is to show to what extent multiple antenna terminals can combat inter-op... more The purpose of this work is to show to what extent multiple antenna terminals can combat inter-operator interference in WCDMA networks. To this end, a realistic modeling of adjacent channel interference-including filters imperfections and power amplifier nonlinearities is considered. Adjacent channel interference creates dead zones where the QoS target cannot be reached. We first characterize these zones in terms of
In the first part of this paper we have derived achievable transmission rates for the (single-ban... more In the first part of this paper we have derived achievable transmission rates for the (single-band) interference relay channel (IRC) when the relay implements either the amplify-and-forward, decode-and-forward or estimate-and-forward protocol. Here, we consider wireless networks that can be modeled by a multi-band IRC. We tackle the existence issue of Nash equilibria (NE) in these networks where each information source
Abstract The main purpose of this paper is to study the performance of the bootstrap channel esti... more Abstract The main purpose of this paper is to study the performance of the bootstrap channel estimation scheme, which consists in this paper in using the hard-decided outputs of the channel decoder/equalizer in order to extend the training sequence. Through a simple ...
This paper provides a source coding theorem for multi-dimensional information signals when, at a ... more This paper provides a source coding theorem for multi-dimensional information signals when, at a given instant, the distribution associated with one arbitrary component of the signal to be compressed is not known and a side information is available at the destination. This new framework appears to be both of information-theoretical and game-theoretical interest: it provides a new type of constraints
This paper considers the problem of cooperative power control in distributed small cell wireless ... more This paper considers the problem of cooperative power control in distributed small cell wireless networks. We introduce a novel framework, based on repeated games, which models the interactions of the different transmit base stations in the downlink. By exploiting the specific structure of the game, we show that we can improve the system performance by selecting the Pareto optimal solution
In this work, we consider a distributed wireless network where many transmitters communicate with... more In this work, we consider a distributed wireless network where many transmitters communicate with a common receiver. Having the choice of their power control policy, transmitters are concerned with energy constraints: instantaneous energy-efficiency and long-term energy consumption. The individual optimization of the average energy-efficient utility over a finite horizon is studied by using control theory and a coupled system of
Transmitters of a multiple access channel are assumed to freely choose their power control strate... more Transmitters of a multiple access channel are assumed to freely choose their power control strategy in order to be energy-efficient. We show that in a stochastic game framework, we can develop energy-efficient distributed control strategies which only require partial knowledge of the entire system. Achievable utility equilibrium region is characterized and based on time-sharing, an explicit power control strategy is
Frequency non-selective time-selective multiple access channels in which transmitters can freely ... more Frequency non-selective time-selective multiple access channels in which transmitters can freely choose their power control policy are considered. The individual objective of the transmitters is to maximize their averaged energy-efficiency. For this purpose, a transmitter has to choose a power control policy that is, a sequence of power levels adapted to the channel variations. This problem can be formulated as
This paper addresses the problem of locating base stations in a certain area which is highly popu... more This paper addresses the problem of locating base stations in a certain area which is highly populated by mobile stations; each mobile station is assumed to select the closest base station. Base stations are modeled by players who choose their best location for maximizing their uplink throughput. The approach of this paper is to make some simplifying assumptions in order
2009 3rd IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2009
We present a Bayesian game-theoretic approach for the distributed resource allocation problem in ... more We present a Bayesian game-theoretic approach for the distributed resource allocation problem in the context of K-user fading multiple access channels (MAC). We assume that users have incomplete information about the channel state information (CSI), i.e., each user knows his own channel state, but does not know the states of other users. All users (transmitters) are considered to be rational,
In this paper we consider some linear multi-antenna receivers to combat inter-operator interferen... more In this paper we consider some linear multi-antenna receivers to combat inter-operator interference in non-coordinated WCDMA networks. Adjacent channel interference creates dead zones where the QoS target cannot be reached. We first characterize the importance of this phenomenon by evaluating the dead zone area and the probability of finding a given number of users in it. We then derive a
2007 IEEE International Symposium on Information Theory, 2007
This paper studies high SNR approximations of the ergodic mutual information of block fading MIMO... more This paper studies high SNR approximations of the ergodic mutual information of block fading MIMO correlated Rician channels. The exact expression of the mutual information of such channels is quite complicated, and difficult to use to obtain convenient high SNR approximations. In this paper, it is replaced by an accurate large system approximant obtained in the case where the number of transmit and receive antennas t and r converge to +¿ at the same rate. The large system approximant is studied at high SNR, and it is shown that 3 different behaviours are possible depending on r/t, the rank of the line of sight component and the Rician factor. The accuracy of the high SNR approximant is shown to be connected to the support of the deterministic large system approximant of the eigenvalue distribution of the Gram matrix of the channel. This allows to infer that the approximant is accurate for realistic values of r and t if r ¿ t or if r = t, the line of sight component is invertible and the Rician factor is greater than a certain threshold.
2010 4th International Symposium on Communications, Control and Signal Processing (ISCCSP), 2010
... mixed strategy. The utility for player i E lC ifthe initial channel state is 1](1), is define... more ... mixed strategy. The utility for player i E lC ifthe initial channel state is 1](1), is defined by: Vi ... if Vi E x.V7I, Vi (i., !l(1)) 2: Vi (7I,i.:;!l(1)) (14) where -i is the standard notation to refer to the set lC\{i}; here i.-i = (71, ..., 7i-l, 7i+l, ...,7K). The notion ...
The purpose of this work is to show to what extent multiple antenna terminals can combat inter-op... more The purpose of this work is to show to what extent multiple antenna terminals can combat inter-operator interference in WCDMA networks. To this end, a realistic modeling of adjacent channel interference-including filters imperfections and power amplifier nonlinearities is considered. Adjacent channel interference creates dead zones where the QoS target cannot be reached. We first characterize these zones in terms of
In the first part of this paper we have derived achievable transmission rates for the (single-ban... more In the first part of this paper we have derived achievable transmission rates for the (single-band) interference relay channel (IRC) when the relay implements either the amplify-and-forward, decode-and-forward or estimate-and-forward protocol. Here, we consider wireless networks that can be modeled by a multi-band IRC. We tackle the existence issue of Nash equilibria (NE) in these networks where each information source
Abstract The main purpose of this paper is to study the performance of the bootstrap channel esti... more Abstract The main purpose of this paper is to study the performance of the bootstrap channel estimation scheme, which consists in this paper in using the hard-decided outputs of the channel decoder/equalizer in order to extend the training sequence. Through a simple ...
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